MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What will be the ciphered text if the plain text SAN is encrypted using hill cipher with keyword as GYBNQKURP ? |
| A. | RAJ |
| B. | JAR |
| C. | ARJ |
| D. | AJR |
| Answer» B. JAR | |
| 2. |
A key matrix used for encryption in hill cipher must be? |
| A. | invertible matrix |
| B. | non invertible matrix |
| C. | square matrix |
| D. | rectangular matrix |
| Answer» B. non invertible matrix | |
| 3. |
What will be the size of a key matrix if the plain text is SECRET ? |
| A. | 1 6 |
| B. | 5 1 |
| C. | 6 1 |
| D. | 6 6 |
| Answer» E. | |
| 4. |
What will be the plain text corresponding to cipher text YGQ if hill cipher is used with keyword as GYBNQKURP ? |
| A. | SECRET |
| B. | WORLD |
| C. | DOLLAR |
| D. | HELLO |
| Answer» B. WORLD | |
| 5. |
Hill cipher is harder to crack than playfair cipher. |
| A. | True |
| B. | False |
| Answer» C. | |
| 6. |
Which of the following is hardest to break using frequency analysis? |
| A. | Vigenere cipher |
| B. | Hill cipher |
| C. | Caesar cipher |
| D. | Affine cipher |
| Answer» C. Caesar cipher | |
| 7. |
Which of the following was the first poly graphic cipher to be able to operate on more than 3 letters at once? |
| A. | autokey cipher |
| B. | hill cipher |
| C. | one time pad cipher |
| D. | playfair cipher |
| Answer» C. one time pad cipher | |
| 8. |
What is poly graphic substitution cipher? |
| A. | a substitution based cipher which uses multiple substitutions at different positions |
| B. | a substitution based cipher which uses fixed substitution over entire plain text |
| C. | a substitution based cipher in which substitution is performed over a block of letters |
| D. | a transposition based cipher which uses fixed substitution over entire plain text |
| Answer» D. a transposition based cipher which uses fixed substitution over entire plain text | |
| 9. |
Encryption in hill cipher is done using ______________ |
| A. | matrix multiplication |
| B. | a 5 5 table |
| C. | vigenere table |
| D. | matrix inversion |
| Answer» B. a 5 5 table | |
| 10. |
Hill cipher is an example of ____________ |
| A. | mono-alphabetic cipher |
| B. | substitution cipher |
| C. | transposition cipher |
| D. | additive cipher |
| Answer» C. transposition cipher | |
| 11. |
Hill cipher requires prerequisite knowledge of? |
| A. | integration |
| B. | differentiation |
| C. | matrix algebra |
| D. | differential equation |
| Answer» D. differential equation | |